Windmill



(No Model.) l l s sheetssheet 1. 'v

E. AJ. SCHROCK.

v WINDMILL.

No. 1549,'749A 4 Patented Nov. 12, 1895.

AN DREW EJERAHAM. PHOTO-LITHD-WASHINGTUN DC,

(No Model.) 3 Sheets-Sheet 3'. f E. J. s CHRooK.

, WINDMILL. l

No. 549,749. Patented Nov. 12, 1895.

UNITED STATES PATENT EEICE.

ELI .I. SCI'IROCK, OE GOSHEN, INDIANA.

WINDMILL.

SPECIFICATION forming part of Letters Patent No. 549,749, dated November12, 1895.

Application filed April 12, 1895*.

To all whom it Medy concern:

Be it known that I, ELI J. SCHROCK, a citizen of the United States,residing at Goshen, in the county of Elkhart, in the State of Indiana,have invented certain new and useful Improvements in Windmills; and I dohereby declare that the following is a full, clear, andv tures: iirst,an improved wind-wheel having a longitudinally-slotted hub soconstructed and arranged as to firmly grip the shaft when in positionthereon and having an improved means for securing the wheel vanes orsails to the outer wheel-rim without the aid of additional parts;second, an improved springgovernor removably mounted on the tail-vanecasting and provided with convenient means for regulating the tensionand leverage thereof; third, an improved friction-brake adjustablymounted upon the main casting, having a guiding and holding blocklongitudinally adjustable upon the tail-vane casting. This object Iattain by the mechanism illustrated in the accompanying drawings, inwhich similar iiguresof reference indicate corresponding partsthroughout the several views.

Figure 1 is a side elevation of my improved windmill, partly in section,showing the construction of the wheel-hub and the manner of securing thesame upon the shaft, and also showing the construction and arrangementof the spring-governor when in position for use. Fig. 2 is a detail ofthe slotted adjustable holding device for regulating the tension of thegovernor. Fig. 3 is a detail of the tailvane buffer. Fig. 4 is a viewof, the reverse side from that seen in Fig. 1, showing the arrangementof the friction-brake and the holding-block which secures the brake-shoein contact with the crank-wheel. Fig. 5 is a detail plan of the brake,partly in section, showing the manner of securing the same in position.Fig. 6 is a detail plan of the hold- Serial No. 545,465. (No model.)

ing-block for the free end of the brake-lever. Fig. 7 is a detail of aportion of a wheel-rim, showing my improved means for securing the vanesor sails thereon. Fig. 8 is a detail of the curved slot in which thevanes are secured, showing the integral upright iiange to which the saidsails are riveted. Fig. 9 is a modiiied form of the said slot with asection of a sail in position therein and secured by means of a punch.

The tubular main casting 1, of any proper construction, preferablyarranged as shown in Eig. 1, has an integral surmounted guidecasting forthe upper end of the pump-rod, which is connected to wheel-shaft bymeans of a crank-wheel 18 and a pitman in a wellknown manner, anintegral oblique wind- Wheel casting 2, in which the wind-wheel shaft 19is rotatably mounted in the usual manner, and a pair of lateral lugs 5and 6 for the 'support of the tail-vane casting 3. y

My improved wind-wheel comprises a tubular metallic hub 20, of properdimensions. adapted to be loosely mounted on the outer end of thewheel-shaft 19, of proper size and strength, and has proper integralspiders 23 and 24, of well-known form, upon the inner and outer endsthereof, respectively, and is provided with a pair ofdiametrically-opposite longitudinal slots 21, Fig. 1, which admit ofreadily and securely clamping the said hub with a firm grip to the saidshaft by means of the threaded bolt 22, which passes diametricallythrough both the said shaft and hub and is then secured by a proper nut.By this construction the wheel can be readily detached upon the removalof the bolt 22 and the hub can be conveniently adjusted to firmly gripthe shaft by tightening the said bolt. By providing my improved hub withthe said diametrical slots the said holding-bolt 22 can be made tospring the sides of the hub into a positive gripping contact, therebyenabling the hub to hold rigidly to the supportingshaft by a frictionalcontact, thereby equalizing the strain upon the hub and relieving thesaid bolt of all lateral strain, affording far greater security, lessstrain upon the wheel, and causing the wheel to be better balanced andsupported when in operation. It is obvious that the said hub can be madein two IOO or more parts, but with less convenience, without departingfrom the spirit of my invention.

The radial wheel-braces 25 and 2G are secured at their inner ends totheir respective spiders 23 and 24 in any proper manner, and they havetheir outer ends iixed in the outer wheel-rim 46, Fig. 7, which isprovided upon its outer edge and at measured intervals with the concaveslots 52, Fig. 8, which have at their outer ends and upon their con vexsides an upturned triangular iiange 4S.

'lhe metallic lioats or sails 45, of proper dimensions, are latera-llyconcavo-convex and are arranged in an oblique position, with theirconcave sides facing outwardly. The said iloats are provided upon theirinner ends with an integral upturned iiange 50, which is rigidly securedto the inner rim 47 by proper rivets 51, Fig. 7. The said floats arefurther secured by being mounted at a proper distance from their freeends in the said slots 52 oi the outer rim and are rigidly fixed thereinby means of the rivets 49, which also pass through the lan ges 4S. Thesaid iioats or sails are thus rigidly and securely fixed in position inthe outer rim without the aid of any additional parts.

Another and modified forni of the said slot 52 is seen in Fig. 9, in.which, instead of the upturned flange 4S, the said slot is slightlyenlarged at its inner end, and the inner edge of the float 45 is made tofill out the said enlarged end by means of a punch or in other propermanner, thereby securing the iioat against displacement, though I preferthe form shown in Fig. 8.

The swinging tail-vane casting 3, of the usual form, is pivotallymounted on the said lugs 5 and G, substantially in line with thewind-wheel shaft. The lower hin ge-lug of the tail-vane is provided uponits upper and lower faces with the integral conical lugs and 1G, adaptedto iit and form a bearing in corresponding recesses in the adjacentfaces ot the rod 10 and the lu g (5, while the upper hinge-lug issecured by the screw-threaded pin 13, having a proper washer 14, Fig. 1.The removable governor -rod 4 is vertically arranged upon the saidconical lug 15, has its upper end recessed to receive the pointed lowerend of the screw-threaded pin 13, and is thereby iirmly secured inposition.

The wire spring 11, of proper strength and formed of one piece, has acentral rearwardlyextended loop by which it is connected to thetail-vane, and is provided with a pair of coils by which it is looselymounted upon the said rod 4, Fig. 1. The free inwardly-entended ends ofthe said wire spring 11 bear against the main casting 1, Fig. 4, in allpositions of adjustment of the tail-vane, and thereby secure the tensionof the said coils under all conditions of service.

At a suitable point on the tail-vane casting is rigidly fixed theoblique plate 17, having near its outer end a longitudinal slotindicated only by dotted lines in Fig. 2.

The plate 29 has at or near its inner end a longitudinal slot 31,registering with the said slot in the plate 17, and in which theholdingbolt 30 is adj ustably mounted, thereby securing the said platesin any desired position ot' longitudinal adjustment. rlhe said plate 29has upon its outer end a hook 12, in which the rearwardlyextended loopoi the wire spring 11 is removably secured.

At or near the lower edge ot' the ttul-vane casting 3 is slidablymounted on the bolts 32 an adjustable buffer 8, having a pair oflongitudinal slots and a semicylindricalhead '7, in the outer end ofwhich is arranged a threaded screw 0, which strikes against thebutter-lu g 2S on the said main. casting. The said plate 8 and the saidscrew f) are both longitudinally adjustable to limit the swing of thetail-vane under the tension. of the said sprin g-governo r. Thewheel-casting 2 is provided with a lateral lu g 54, adjacent the innerface of the crank-wheel, Fig. 5, having at its outer end the transverseslot 39, in which my improved brake is pivotally mounted. Thebrake-lever 35, preferably of springl metal, has upon its inner face andnear its inner end a perforated lug 55, loosely secured in the said slot30 by means ol' the pin or pivot 3G. The said inner end of the lever isalso provided with a threaded ad justin g-serew 3 to limit the outwardmovement oi' the said lever by coming in contact with the inner face oithe said slot 39. 'lhe brake-shoe 34 is rigidly fixed on the inner i'aceof the said lever at a point directly adjacent to the perimeter ofthecrank-wheel 18 by means of a proper screw 40. rl`he said shoe 34 has aninner concave face provided upon its outer edge with an upright ila-ngeto bear upon both the perimeter and the outer face of said crank.- wheelto better lock the same.

The tail-vane casting 3 is provided with a flange 43, arranged in thesame horizontal plane as that of the lever 35, and upon this llange isadjustably mounted. the block 4l, Figs. 4 and 6, having its base 44longitudinally grooved to slide upon the ilange 43 and provided with alongitudinal slot in whicl 1. the securing-bolt is arranged. The saidblock 41 is provided upon the lower edge of its convex face with alateral flange, the upper face of which Yforms a bearing for the :freeend of the brake-lever 35 and also serves to guide it into a properengagement with the convex i'ace oi' the said block 41 when thetail-vane is arranged in4 a position parallel with the windwheel,thereby securely holding the same in a position of rest by theengagement of the said shoe 34 with the said crank-wheel. It will beseen that the arrangement of the free end of the pivoted lever 35 withthe block 41 will cause the said upright flange on the shoe IOO 34 toimpinge upon the adjacent face of the crank-wheel and thus aid instopping and securing the same.

It is obvious that while I employ but two coils in the spring ll aseries of coils may be so employed without departing from the spirit ofmy invention.

Having thus described my invention and the manner of employing the same,what I desire to secure by Letters Patent is l. In a wind wheel aremovable metallic hub provided with diametrically opposite slots, asshown, and having a diametric adjusting bolt passing through both thehub and the rotatable shaft, adapted to spring the opposite sides of thesaid hub into frictional contact with the said shaft, whereby the saidbolt is relieved of lateral strain and the hub is rigidly secured inposition by the said frictional contact, all substantially as described.

2. In a windmill a spring governor to hold I the wind-wheel normally inthe wind, consisting of a vertically disposed and removable rod 4pivotally mounted in the tail-vane casting, as shown, a coil spring 11having its coils arranged as shown, and loosely mounted on said rod, thefree ends of said spring having a bearing against the main casting andthe looped extended end thereof being provided with means for adjustingthe tension of said spring, substantially as described.

3. A detachable governor for windmills adapted to normally keep the Windengine in gear, comprising an upright rod 4 pivotally mounted on theconical lug l5 and loosely secured at its upper end by a removable pin,as shown, a spring having two or more coils loosely mounted upon saidrod, and having its free ends loosely secured by the main casting, asshown, and provided with a rearwardly extended loop having suitablemeans for adjusting the tension of said spring, substantially asdescribed.

4. In a windmill a friction-brake to lock the wind wheel when out ofthewind, comprising a brake-lever of spring-metal pivotally mounted in aslotted lug -as shown, on the main-casting, having a shoe 34 fixedthereon to engage the perimeter of the crank-wheel, and provided at itsinner end with an adjusting screw 37 for the purpose described, and theflanged and slotted holding block 4l adjustably mounted upon thetail-vane casting and adapted to automatically press the said shoe intoengagement with the said crankwheel by engaging and securing the freeend of the said brake-lever, all substantially as described.

Signed by me at Goshen, Elkhart county, State of Indiana, this 8th dayof April, A. D. 1895.

ELI J. SCHROCK.

Witnesses:

L. BURR WHIPPY, JOHN W. PARK.

